Trimming mechanism for linotype-machines.



H. PETERSEN.- TRIMMING MECHANISM FOR LINOTYPE MACHINES.

APPLICATION FILED SEPT. a. 1915.

I 1,178,598. Patented Apr. 11, 1916.

knife, these adjusting screwsgbeing associ- I desired position,

"s erra HANS PETERSEN, OF

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TRIMIVIING momma ron' ririiorrrn-irnenmns.-

messes.

Specification of Letters Patent.

Application filed September 3,1915. Serial No. 48,814.

To all whom it may concern: I Be it known that I, HANS Pnrnesnn, acitizen of the United States of America, residing at Davenport, in thecounty ofScott and State of Iowa, have invented certain new and usefulImprovementsin Trimming Mechanism for Linotype '-Machines, of which thefollowing is a specification. This invention relatesjto improvements ina trimming mechanism'for a'linotype machine, for shaving theroughenedsides' of the printingslugs after their delivery from thenioldin which they are cast] r f It has been proposed in the present art toprovide an adjustment for the knife termed the stationary knife, butthis adjustment has generally been in the form of an adjusting screw toadjust the knife, but in a 4 single direction, after which the knife-isheld on its seating by means of a-transverse fastening member. I am'alsoaware that it has been proposed toplace a resilient'member behind theso-called stationary knife, acting in a direction opposite to an adjustaing screw, but this has proven to be only a slight advantage over theform Where no spring is used, as the spring merely acts as a followerfor the knife whenthe holding screws are released, and constitutes nopositive means for rigidly holding the same in its adjusted position. I1

It is the purpose of the present invention vto provide adjusting.members for the so called stationary knife engaging opposite partsthereof, the adjusting members operating in directions opposite to eachother, so that the knife may be positively adjusted, and rigidlyretained in its adjusted position; the knife when adjusted is what mightbe termed stationary.

Structurally speaking, the preferred. embodiment of the inventioncapable of obtaining the results above stated, comprises a pair ofthreaded adjusting screws arranged to engage opposite portions of theated with the knife block, so that'it is only necessary to raise orlower the screws to the after which the knife is positively heldbythe'adjusting screws. I

In the accompanying drawing, I have P tened to the knife block 1 at of,these plates affording. seating means for V transverse fastening nar lyused.

Patented Apr-.11, 1916. 1

represented the knives as constructed and- "7 adapted to be appliedtothe ordinary lino- I type machine, but it willbe readily understoodthat the cutting mechanism may be varied in design,rform and size andapplied to any special type of'machine without de-- partmg from theinvention.

,In. the drawings: Figure '1 tion of the device; andFig. 2 is an endview of the same. 1 Referring more particularly to the draw-1vv 1 ings,wherein likenumeralsindicate cor- "responding parts the numeral 1designates what is commonly known as the knife block of a linotypemachine, having a cut-out poris a side eleva-;

tion 21in its face to provide a-seat for the I movable knife 2,and anoutstanding flange 3 adapted tooverlie the knife. The movable knife 2jpositioned; within the cut-away portion. 2 is capableof an adjustmentby means of the adjusting screws or bolts 5, one of these screws orbolts being placed so that they operate on the knife near each endthereof and having threaded shank portions 6 passing through thethreaded aper- "tures 7 intheoutstanding flange 3. The ad-- justingscrews are entirely disconnected from the knife-and merely bear againstthe upper portion thereof, and at their extreme outer ends are greatlyreduced in diameter to provide shoulders 7" and reduced 'eXten-,, 1

sions 8upon which the gears 8 rest, these gears being retained inposition by nuts 9. The knifeQ' isvadjusted to'the desired positionby'nieans of the adjusting screws 5 and is held in said adjustedposition by the springs 9 secured to the rear portion ofthe knife blockin; any'suitable manner, and pass 7 through relatively wide transverseapertures 10 near each end of the knife block, the

free ends of the springs entering the slots or recesses 1 0' arranged 1nthe lower portion of the movable rknife, so thatthis knife is at allscrews, ,due to ngs. ,A pair of gib plates 11 are faseach end theretimesforced. against the adjusting the movable knife, and eliminating thescrews that are ordiw the tension of the; adjusting- Overlying theoutstanding flange 3 is the rotating gear 11, having a plurality ofteeth on its periphery and at opposite ends thereof engaging the gearwheels 8 rigidly fastened to the adjustable screws 5, so that the.

knife is adjusted to the desired position by a rotary movement of thesaid gear 11, after which the gear is retained in position by a lockinin 12 assin therethrou 'h and to p t) 3 enterin the flan e aortion oftheknife block.

' While the movable knife and its adjustments are preferably constructedin accordance ith the above description, I Wish it to be clearlyunderstood that many changes and modifications to this adjustingmechanism and knife can be made without departing from the invention.

The other knife block 12 1s spaced a slight distance from the block 2and carr1es a so called stationary knife 13, this knife also i thepassage of the printing slugs between the knives. in order that thestatlonary be seen that when by means of adjustable screws 17.

-which pass through the t being spaced from the knife 2 to allow knifemay operate successfully with the different parts of the machine subjectto wear and tear at all times, it has been found that the only way inwhich good results can be obtained is by allowing this knife to have'aslight adjustment,'after'which itmust be rigidly retained in itsadjusted position, so

that no movement thereof is permitted; The

' knife 13 is movably fastened to the outer face of the knife block 12,and is adjusted to any pos tion by means ofthe ad usting screws 14threaded 1n the apertures 15 arranged in the outstanding ears or lugs 16projecting and the relatlvely long from the knife block,

The adjusting screws l-i-bear against the lower portion of the knife,constituting a movable seat therefor,

and the relatively long threaded screws 17 18 in the flange 3, contactwith the opposite portion of the knife and prevent any upward movementof the same after its adustment. A palr of transverse fastening screws19 pass through the enlarged apertures 20 in the block, the saidapertures 'bemg of such width as to allow the vertical adjustment offastening screws therein, the

outer end of the fastening screws engaging the knife to assist inretaining the same on its seat, the said transverse fastening screwsbeing similar to those now in use. It will the knife 13 is adjusted, theadjusting screwsabove described, it is positively retained and heldrigid in its adjusted position, in view of the fact that the adjustingscrews rest upon different portions of the knife and operate indirections opposite to each other so that all 'movement of the knife isprevented.

It isevident that various changes might be resorted to 1n the form andarrangement nreaded apertures 'ity of adjusting screws carried by saidblocks and en a in the knives for retaining'the same in their variousadjusted positions relative to each other, the adjusting screws'for oneof the knives being oppositely disposed and carried by thesupportingblocks, the said adjusting screws engaging the upper and lower portionsof the knife to positively support the same in its adjusted position andprevent any bodily movement thereof.

3. A slug trimming mechanism for lino- 7 type machines comprising knifesupporting blocks, a pair of adjustable knives thereon, means foradjusting said knives relative to each other comprising adjusting screwscar ried by the supporting blocks, the adjusting screws for one of thesaid knives being oppositely disposed and engaging different portions ofthe knife to positively support the same in its adjusted position andpre vent any bodily movement thereof.

4. A slug trimming mechanism for linotype machines, comprising knifesupper ing members, trimming knives thereon, a pin-- rality ofvadjusting screws engaging said knives for retaining the same in theirvarious adjusted positions relative to each other, the ad ustingscrewsfor one of the knlves being oppositely disposed and en gaging the upperand lower portions of the knife to positively support the same in ltsadjusted position and prevent any bodily movement thereof, and aresilient member adapted to engage the other of said knives to retainthe same in its adjusted position.

5. A trimming mechanism of the character described comprising supportingmembers, a pair of separately adjustable cutters on said members, meansfor adjusting said cutters relative to each other, the adjusting meansfor one of the cutters comprising opposed members adapted to preventmove- 7 ment of the cutter in either direction relative to the othercutter and to bodily fit the same in its adjusted position, and theother of said adjusting means permitting the adjustment ofits cuttertoward and from the other cutter.

6. Atrimming mechanism of the characthe other cutter; the other of saidadjust- 1g ter described comprising supporting meming means permittingthe adjustment of its bers a pair of separately adjustable cutterscutter toward and from the other cutter.

on said members, means for adjusting said In testimony-whereof I aflixmy signature 5 cutters relative to each other, the adjusting 1 in thepresence of tWo Witnesses. 1 7

means for one of the cutters adapted to sup- 7 HANS PETERSEN.

port and positively hold the same in its ad- Witnesses:

justed position to prevent any back and" CHARLES S. PRYOR,

forth bodily movement thereof relative t0 CAROLYN RAAB copies of thispatent may be obtained for five cents each, by addressing :the"Commissioner of ,Iatents,

Washington, D. 0. x I r

